[c-nsp] PBR on sup720

[Paul Magee]

Hi Arie,

Does this also apply to the SX version?

Thanks,

Paul

-----Original Message-----
From: Arie Vayner (avayner) [mailto:avayner at cisco.com] 
Sent: 31 October 2012 15:59
To: Paul Magee; cisco-nsp at puck.nether.net
Subject: RE: PBR on sup720

Paul,

Nop... All packets are handled in HW assuming your actions are supported...
Performance should be the same as regular routing as long as it's done in HW and you do not exceed TCAM resources.

In some older IOS versions there were issues with what happens when the next hop is not available... Packets were punted to the RP. This is not the case after SRD (I think).

Check out:
http://www.cisco.com/en/US/partner/docs/routers/7600/ios/12.2SR/configuration/guide/cef.html
http://www.cisco.com/en/US/partner/docs/routers/7600/ios/12.2SR/configuration/guide/layer3.html#wp1027016 

Arie


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Paul Magee
Sent: Wednesday, October 31, 2012 08:40
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] PBR on sup720

Hello,

 

Does anyone have any experience of using policy based routing with vrf-lite on a Sup 720? 

 

I gather that the first packet is handled in software and from that point on the route exists in the cef table. Is that a big performance hit? What sort of throughput/number of connections can I expect to be able to handle before everything comes crashing to its knees? Do Cisco have any figures on this hidden away anywhere?

 

Thanks,

 

Paul

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